The upstream commit f96baeb75fc36a41d2b08f880536cee5a8041e79
with the title:

QSortFilterProxyModel: honor the roles parameter of dataChanged

changes the signature of the private _q_sourceDataChanged slot
of QSortFilterProxyModel. I talked to Peppe and he told me to just
use the new signature from Qt 5.5 and onwards. Note that the vector
of roles was present in the dataChanged signal from 5.0 onwards
already. It was simply ignored by QSFPM so far.